Reducing unused JavaScript is crucial for optimizing modern websites. This guide covers techniques like code splitting, tree shaking, minifying JavaScript, loading scripts asynchronously, dynamic imports, and lazy loading to help improve web performance by cutting down on unnecessary code.

6m read timeFrom dev.to
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Table of contents
What is unused JavaScript?Removing unused code:Code Splitting:Tree shaking:JavaScript modification:Load JavaScript asynchronously:Dynamic ImportsLazy loading techniqueConclusion
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